The square root of 25 is 5
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You look for the largest perfect square, and take it out. In this case: root(125) = root(25 x 5) = root(25) x root(5) = 5 x root(5).
The idea is to take out perfect squares. Root(50) = root(2 x 25) = root(2) x root(25) = 5 x root(2).
The number of which the square root is to be found is called the "radicand." The symbol before the number is called the radical sign. ( √ ) E.g. √4 = 2, √25 = 5
The square root of 25 is 5.